Sash-fastener



NTTnn l STATES PATENT Enron.

ELMER I. FROELICII, OF PHILADELPHIA, PENNSYLVANIA.

sAsH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 584,343, dated June 15,1897. Application iiled April 14, 1896. Serial No. 587.528. (No model.)

`Tof LZZ whom it may concern.-

Be it known that I, ELMER l. FRonLIcH, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inSash-Fasteners, of which the following is a'speciiication.

My invention relates to a new and useful impro-vement. in sash-locks,and has for its object to provide a device of this description by meansof which the meeting-rails of the upper and lower sashes of the windowwill be securely held against vertical movement and at the same timedrawn tightly together and prevented from rattling.

l My invention consists in a turning bolt having a convolute form,pivoted upon the under side of the frame of the sash-lock, and a stopalso arranged on the under side of the frame and which engages with thebolt by frictional contact, combined with a spring which engages therounded end of the bolt and which serves to help keep the bolt fromworking out of the frame at its free end, the frictional stop serving tohold the free end of the bolt in the frame when not held by the spring,as will be more fully described hereinafter.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction and operation in detail, referring by number to theaccompanying drawings, forming a part of this specification, and inwhich-- Figure l is a perspective of a portion of the upper and lowersashes of a window, showing my improvement applied thereto, the lowersash being slightly raised so as to clearly illustrate the position ofthe escutcheon upon the rail of the upper sash; Fig. 2, a plan view ofthe meeting-rail of the lower sash and a section of the meetingrail ofthe upper sash, showing the lock in operative position; Fig. 3, a planview of the lock Fig. 4, a central longitudinal section thereof, andFig. 5 a central cross-section of the two meeting-rails with myimprovement applied thereto.

Referring to the drawings in detail, l represents the meeting-rail ofthe lower sash, and 2 the meeting-rail of the upper sash, which, whenboth of said sashes are closed, lie side by side and parallel with eachother. Upon the rail l is secured .the lock 3, which is preferably setwithin a suitable recess formed therein, so as to be iush with the uppersurface of the rail, and this lock is composed of a plate 4, having anannular recess 5 formed therein, the walls of which proj ect downward,as clearly shown in Figs. 4 and 5. 0n the inner side of the recessedportion 5 is a stop Vor lock 6, as shown in Fig. 3, and which is curvedon its inner edge and located so as to engage with the rounded edge ofthe bolt 1l. This stop is so located that when the bolt is forciblyretracted the rounded edge of the bolt engages by friotional contactwith this stop, so as to lock the bolt in place and prevent it fromprotruding at its outer end from the shaking of the sash. This plate isalso provided with a iiange 7, adapted to be set flush with the innersurface of the rail l. S is a spindle provided with a turn-button 9 andjournaled within the bottom of the recess, and I prefer to make thelower end of this spindle square in cross-section, as indicated at l0,whereby the bolt ll may be secured thereon against rotation. This boltis of oonvolute form, is made to turn through about a quarter of acircle at its outer end, and the nose thereof is arranged to passthrough the slot l2 in the flange 7 and engage with the cross-bar 13 ofthe escutcheon 14C by passing into the elongated slot l5 and projectinginto the shorter s101316, formed in this escutcheon.V The escutcheon issecured in place by meansof suitable screws 17, passed through holestherein upon the outer surface of the rail 2.

is secured by a screw 19 to the Harige, as clearly shown in Figs. 3 and4, and the tension of this spring upon the irregular surface of the hubis suchl as to tend to hold the bolt in either its open or closedposition, as will be readily understood, so that the operation of myimprovement will' be as follows:

After the lock and escutcheon have been secured in place, as beforedescribed, and the rails l and 2 are brought side by side by the slidingof the sash the nose of the bolt is turned into engagement with thecross-bar 13 by the proper manipulation of the turnbutton 9, and ifsuflicient force be exerted Against the hub of the'bolt' bears a spring18, the opposite end of which ICO upon this turn-button the nose willdraw the two sashes tightly together at their meetingrails, therebypreventing any rattle in the Window.

It is obvious that a window thus secured cannot be unlocked from theoutside, since n o tool, however thin, can be passed between theescutcheon and .flange 7 on account of the binding of these surfacestogether by the a0- tion of the bolt, as just described, and thereforemy improvement forms a perfectly secure lock against the opening` of awindow eX- cept from the inside.

One of the advantages of my improvement is that all the parts of thelock are flush with the woodwork of the sash, and therefore does notinterfere with surrounding objects and is not objectionable to the eye.

In practice I prefer to thicken the bar 13,

as clearly shown in Fig. 2, and curve it upon its rear side, by means ofwhich the contour of the bolt will be adapted thereto, providing afirmer bearing than lwould otherwise he the case.

Hbvin g thus fully described my invention, what I claim as new anduseful ise-y In a sash-lock, the plate 4c, provided with a recessedportion 5, and a stop 6 formed on the rear of the recessed portion, andso arranged as to engage with the bolt by frictional contact, combinedwith a turning bolt pivoted upon the recessed portion and having aconvolute form, a spring for engaging with the rounded face of the innerend of the bolt, a turn-button located in the recessed portion of theplate 4, and an escutcheon-plate 13 provided withv perforations toreceive the outer curved end of the bolt, wherebyT the meeting-rails ofthe two sashes are drawn forcibly together, and locked, substantially asshown.

In testimony whereof I have hereunto afiXed my signature in the presenceof two su bscribing witnesses.

ELMER I. FROELICH. Witnesses:

S. S. WILLIAMsoN, MARK BUFORD.

